1. NLP

2. Examples of Text Classification
Introduction to NLP
Examples of Text Classification

3. Who wrote which Federalist papers?
1787-8: anonymous essays try to convince New York to ratify U.S Constitution: Jay, Madison, Hamilton.
Authorship of 12 of the letters in dispute
1963: solved by Mosteller and Wallace using Bayesian methods
James Madison
Alexander Hamilton

4. Male or female author?
By 1925 present-day Vietnam was divided into three parts under French colonial rule. The southern region embracing Saigon and the Mekong delta was the colony of Cochin-China; the central area with its imperial capital at Hue was the protectorate of Annam…
Clara never failed to be astonished by the extraordinary felicity of her own name. She found it hard to trust herself to the mercy of fate, which had managed over the years to convert her greatest shame into one of her greatest assets…
#1: Saigon. Grey, Anthony
#2: Jerusalem the Golden. Drabble, Margaret
From shlomo argamon
S. Argamon, M. Koppel, J. Fine, A. R. Shimoni, “Gender, Genre, and Writing Style in Formal Written Texts,” Text, volume 23, number 3, pp. 321–346

5. Positive or negative movie review?
unbelievably disappointing
Full of zany characters and richly applied satire, and some great plot twists
this is the greatest screwball comedy ever filmed
It was pathetic. The worst part about it was the boxing scenes.

6. What is the subject of this article?
MEDLINE Article
MeSH Subject Category Hierarchy
Antogonists and Inhibitors
Blood Supply
Chemistry
Drug Therapy
Embryology
Epidemiology … ?

7. Well-known Datasets RCV1 20 newsgroups Reuters-21578 WebKB
Reuters-21578
Cats: grain, acquisitions, corn, crude, wheat, trade…
WebKB
course, student, faculty, staff, project, dept, other
RCV1
Larger Reuters corpus

8. NLP